#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int function(int a, int b, int c) {
	c = a * b;
}
int main(void) {
	int c = 0;
	function(10, 20, c);
	printf("%d", c);
	int x, y, z;
	scanf("%d%d%d", &x, &y, &z);
	printf("x+y+z=%d\n", x + y + z);
}